X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/2604c3217eba299c181868de418880c38e93a24d..e3f7675264914032a21fca8a50170d6c0dd375f9:/IkiWiki/Plugin/aggregate.pm

diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 7142e6106..2a3f36fce 100644
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -5,38 +5,41 @@ package IkiWiki::Plugin::aggregate;
 use warnings;
 use strict;
 use IkiWiki;
+use HTML::Entities;
+use HTML::Parser;
+use HTML::Tagset;
+use URI;
+use open qw{:utf8 :std};
 
 my %feeds;
 my %guids;
 
 sub import { #{{{
-	IkiWiki::hook(type => "getopt", id => "aggregate", 
-		call => \&getopt);
-	IkiWiki::hook(type => "checkconfig", id => "aggregate",
-		call => \&checkconfig);
-	IkiWiki::hook(type => "filter", id => "aggregate", 
-		call => \&filter);
-	IkiWiki::hook(type => "preprocess", id => "aggregate",
-		call => \&preprocess);
-        IkiWiki::hook(type => "delete", id => "aggregate",
-                call => \&delete);
-	IkiWiki::hook(type => "savestate", id => "aggregate",
-		call => \&savestate);
+	hook(type => "getopt", id => "aggregate", call => \&getopt);
+	hook(type => "checkconfig", id => "aggregate", call => \&checkconfig);
+	hook(type => "filter", id => "aggregate", call => \&filter);
+	hook(type => "preprocess", id => "aggregate", call => \&preprocess);
+        hook(type => "delete", id => "aggregate", call => \&delete);
+	hook(type => "savestate", id => "aggregate", call => \&savestate);
 } # }}}
 
 sub getopt () { #{{{
         eval q{use Getopt::Long};
+	error($@) if $@;
         Getopt::Long::Configure('pass_through');
-        GetOptions("aggregate" => \$IkiWiki::config{aggregate});
+        GetOptions("aggregate" => \$config{aggregate});
 } #}}}
 
 sub checkconfig () { #{{{
+	IkiWiki::lockwiki();
 	loadstate();
-	if ($IkiWiki::config{aggregate}) {
+	if ($config{aggregate}) {
 		IkiWiki::loadindex();
 		aggregate();
+		expire();
 		savestate();
 	}
+	IkiWiki::unlockwiki();
 } #}}}
 
 sub filter (@) { #{{{
@@ -72,17 +75,19 @@ sub preprocess (@) { #{{{
 	$feed->{url}=$params{url};
 	my $dir=exists $params{dir} ? $params{dir} : $params{page}."/".IkiWiki::titlepage($params{name});
 	$dir=~s/^\/+//;
-	($dir)=$dir=~/$IkiWiki::config{wiki_file_regexp}/;
+	($dir)=$dir=~/$config{wiki_file_regexp}/;
 	$feed->{dir}=$dir;
 	$feed->{feedurl}=defined $params{feedurl} ? $params{feedurl} : "";
 	$feed->{updateinterval}=defined $params{updateinterval} ? $params{updateinterval} * 60 : 15 * 60;
 	$feed->{expireage}=defined $params{expireage} ? $params{expireage} : 0;
 	$feed->{expirecount}=defined $params{expirecount} ? $params{expirecount} : 0;
 	delete $feed->{remove};
+	delete $feed->{expired};
 	$feed->{lastupdate}=0 unless defined $feed->{lastupdate};
 	$feed->{numposts}=0 unless defined $feed->{numposts};
 	$feed->{newposts}=0 unless defined $feed->{newposts};
 	$feed->{message}="new feed" unless defined $feed->{message};
+	$feed->{error}=0 unless defined $feed->{error};
 	$feed->{tags}=[];
 	while (@_) {
 		my $key=shift;
@@ -93,8 +98,11 @@ sub preprocess (@) { #{{{
 	}
 
 	return "<a href=\"".$feed->{url}."\">".$feed->{name}."</a>: ".
-	       "<i>".$feed->{message}."</i> (".$feed->{numposts}.
-	       " stored posts; ".$feed->{newposts}." new)<br />";
+	       ($feed->{error} ? "<em>" : "").$feed->{message}.
+	       ($feed->{error} ? "</em>" : "").
+	       " (".$feed->{numposts}." posts".
+	       ($feed->{newposts} ? "; ".$feed->{newposts}." new" : "").
+	       ")";
 } # }}}
 
 sub delete (@) { #{{{
@@ -102,17 +110,15 @@ sub delete (@) { #{{{
 
 	# Remove feed data for removed pages.
 	foreach my $file (@files) {
-		my $page=IkiWiki::pagename($file);
+		my $page=pagename($file);
 		remove_feeds($page);
 	}
 } #}}}
 
 sub loadstate () { #{{{
-	eval q{use HTML::Entities};
-	die $@ if $@;
-	if (-e "$IkiWiki::config{wikistatedir}/aggregate") {
-		open (IN, "$IkiWiki::config{wikistatedir}/aggregate" ||
-			die "$IkiWiki::config{wikistatedir}/aggregate: $!");
+	if (-e "$config{wikistatedir}/aggregate") {
+		open (IN, "$config{wikistatedir}/aggregate" ||
+			die "$config{wikistatedir}/aggregate: $!");
 		while (<IN>) {
 			$_=IkiWiki::possibly_foolish_untaint($_);
 			chomp;
@@ -145,9 +151,9 @@ sub loadstate () { #{{{
 
 sub savestate () { #{{{
 	eval q{use HTML::Entities};
-	die $@ if $@;
-	open (OUT, ">$IkiWiki::config{wikistatedir}/aggregate" ||
-		die "$IkiWiki::config{wikistatedir}/aggregate: $!");
+	error($@) if $@;
+	open (OUT, ">$config{wikistatedir}/aggregate" ||
+		die "$config{wikistatedir}/aggregate: $!");
 	foreach my $data (values %feeds, values %guids) {
 		if ($data->{remove}) {
 			if ($data->{name}) {
@@ -162,6 +168,11 @@ sub savestate () { #{{{
 			}
 			next;
 		}
+		elsif ($data->{expired} && exists $data->{page}) {
+			unlink pagefile($data->{page});
+			delete $data->{page};
+			delete $data->{md5};
+		}
 
 		my @line;
 		foreach my $field (keys %$data) {
@@ -181,26 +192,53 @@ sub savestate () { #{{{
 	close OUT;
 } #}}}
 
+sub expire () { #{{{
+	foreach my $feed (values %feeds) {
+		next unless $feed->{expireage} || $feed->{expirecount};
+		my $count=0;
+		foreach my $item (sort { $IkiWiki::pagectime{$b->{page}} <=> $IkiWiki::pagectime{$a->{page}} }
+		                  grep { exists $_->{page} && $_->{feed} eq $feed->{name} && $IkiWiki::pagectime{$_->{page}} }
+		                  values %guids) {
+			if ($feed->{expireage}) {
+				my $days_old = (time - $IkiWiki::pagectime{$item->{page}}) / 60 / 60 / 24;
+				if ($days_old > $feed->{expireage}) {
+					debug("expiring ".$item->{page}." ($days_old days old)");
+					$item->{expired}=1;
+				}
+			}
+			elsif ($feed->{expirecount} &&
+			       $count >= $feed->{expirecount}) {
+				debug("expiring ".$item->{page});
+				$item->{expired}=1;
+			}
+			else {
+				$count++;
+			}
+		}
+	}
+} #}}}
+
 sub aggregate () { #{{{
 	eval q{use XML::Feed};
-	die $@ if $@;
+	error($@) if $@;
 	eval q{use HTML::Entities};
-	die $@ if $@;
+	error($@) if $@;
 
 	foreach my $feed (values %feeds) {
-		next unless $IkiWiki::config{rebuild} || 
+		next unless $config{rebuild} || 
 			time - $feed->{lastupdate} >= $feed->{updateinterval};
 		$feed->{lastupdate}=time;
 		$feed->{newposts}=0;
 		$IkiWiki::forcerebuild{$feed->{sourcepage}}=1;
 
-		IkiWiki::debug("checking feed ".$feed->{name}." ...");
+		debug("checking feed ".$feed->{name}." ...");
 
 		if (! length $feed->{feedurl}) {
 			my @urls=XML::Feed->find_feeds($feed->{url});
 			if (! @urls) {
 				$feed->{message}="could not find feed at ".$feed->{feedurl};
-				IkiWiki::debug($feed->{message});
+				$feed->{error}=1;
+				debug($feed->{message});
 				next;
 			}
 			$feed->{feedurl}=pop @urls;
@@ -208,12 +246,14 @@ sub aggregate () { #{{{
 		my $f=eval{XML::Feed->parse(URI->new($feed->{feedurl}))};
 		if ($@) {
 			$feed->{message}="feed crashed XML::Feed! $@";
-			IkiWiki::debug($feed->{message});
+			$feed->{error}=1;
+			debug($feed->{message});
 			next;
 		}
 		if (! $f) {
 			$feed->{message}=XML::Feed->errstr;
-			IkiWiki::debug($feed->{message});
+			$feed->{error}=1;
+			debug($feed->{message});
 			next;
 		}
 
@@ -228,10 +268,10 @@ sub aggregate () { #{{{
 			);
 		}
 
-		$feed->{message}="processed ok";
+		$feed->{message}="processed ok at ".
+			displaytime($feed->{lastupdate});
+		$feed->{error}=0;
 	}
-
-	# TODO: expiry
 } #}}}
 
 sub add_page (@) { #{{{
@@ -243,6 +283,7 @@ sub add_page (@) { #{{{
 	if (exists $guids{$params{guid}}) {
 		# updating an existing post
 		$guid=$guids{$params{guid}};
+		return if $guid->{expired};
 	}
 	else {
 		# new post
@@ -258,18 +299,17 @@ sub add_page (@) { #{{{
 		# directory name or trigger ".." disallowing code.
 		$page=~s!([/.])!"__".ord($1)."__"!eg;
 		$page=$feed->{dir}."/".$page;
-		$page=lc($page);
-		($page)=$page=~/$IkiWiki::config{wiki_file_regexp}/;
+		($page)=$page=~/$config{wiki_file_regexp}/;
 		if (! defined $page || ! length $page) {
 			$page=$feed->{dir}."/item";
 		}
 		my $c="";
-		while (exists $IkiWiki::pagesources{$page.$c} ||
+		while (exists $IkiWiki::pagecase{lc $page.$c} ||
 		       -e pagefile($page.$c)) {
 			$c++
 		}
 		$guid->{page}=$page;
-		IkiWiki::debug("creating new page $page");
+		debug("creating new page $page");
 	}
 	$guid->{feed}=$feed->{name};
 	
@@ -277,26 +317,25 @@ sub add_page (@) { #{{{
 	# to avoid unneccessary rebuilding. The mtime from rss cannot be
 	# trusted; let's use a digest.
 	eval q{use Digest::MD5 'md5_hex'};
+	error($@) if $@;
 	require Encode;
 	my $digest=md5_hex(Encode::encode_utf8($params{content}));
-	return unless ! exists $guid->{md5} || $guid->{md5} ne $digest || $IkiWiki::config{rebuild};
+	return unless ! exists $guid->{md5} || $guid->{md5} ne $digest || $config{rebuild};
 	$guid->{md5}=$digest;
 
 	# Create the page.
-	my $template=IkiWiki::template("aggregatepost.tmpl", blind_cache => 1);
-	my $content=$params{content};
-	$params{content}=~s/(?<!\\)\[\[/\\\[\[/g; # escape accidental wikilinks
-	                                          # and preprocessor stuff
+	my $template=template("aggregatepost.tmpl", blind_cache => 1);
 	$template->param(title => $params{title})
 		if defined $params{title} && length($params{title});
-	$template->param(content => $params{content});
-	$template->param(url => $feed->{url});
+	$template->param(content => htmlescape(htmlabs($params{content}, $feed->{feedurl})));
 	$template->param(name => $feed->{name});
-	$template->param(link => $params{link}) if defined $params{link};
+	$template->param(url => $feed->{url});
+	$template->param(permalink => urlabs($params{link}, $feed->{feedurl}))
+		if defined $params{link};
 	if (ref $feed->{tags}) {
 		$template->param(tags => [map { tag => $_ }, @{$feed->{tags}}]);
 	}
-	IkiWiki::writefile($guid->{page}.".html", $IkiWiki::config{srcdir},
+	writefile(htmlpage($guid->{page}), $config{srcdir},
 		$template->output);
 
 	# Set the mtime, this lets the build process get the right creation
@@ -304,6 +343,58 @@ sub add_page (@) { #{{{
 	utime $mtime, $mtime, pagefile($guid->{page}) if defined $mtime;
 } #}}}
 
+sub htmlescape ($) { #{{{
+	# escape accidental wikilinks and preprocessor stuff
+	my $html=shift;
+	$html=~s/(?<!\\)\[\[/\\\[\[/g;
+	return $html;
+} #}}}
+
+sub urlabs ($$) { #{{{
+	my $url=shift;
+	my $urlbase=shift;
+
+	URI->new_abs($url, $urlbase)->as_string;
+} #}}}
+
+sub htmlabs ($$) { #{{{
+	# Convert links in html from relative to absolute.
+	# Note that this is a heuristic, which is not specified by the rss
+	# spec and may not be right for all feeds. Also, see Debian
+	# bug #381359.
+	my $html=shift;
+	my $urlbase=shift;
+
+	my $ret="";
+	my $p = HTML::Parser->new(api_version => 3);
+	$p->handler(default => sub { $ret.=join("", @_) }, "text");
+	$p->handler(start => sub {
+		my ($tagname, $pos, $text) = @_;
+		if (ref $HTML::Tagset::linkElements{$tagname}) {
+			while (4 <= @$pos) {
+				# use attribute sets from right to left
+				# to avoid invalidating the offsets
+				# when replacing the values
+				my($k_offset, $k_len, $v_offset, $v_len) =
+					splice(@$pos, -4);
+				my $attrname = lc(substr($text, $k_offset, $k_len));
+				next unless grep { $_ eq $attrname } @{$HTML::Tagset::linkElements{$tagname}};
+				next unless $v_offset; # 0 v_offset means no value
+				my $v = substr($text, $v_offset, $v_len);
+				$v =~ s/^([\'\"])(.*)\1$/$2/;
+				my $new_v=urlabs($v, $urlbase);
+				$new_v =~ s/\"/&quot;/g; # since we quote with ""
+				substr($text, $v_offset, $v_len) = qq("$new_v");
+			}
+		}
+		$ret.=$text;
+	}, "tagname, tokenpos, text");
+	$p->parse($html);
+	$p->eof;
+
+	return $ret;
+} #}}}
+
 sub remove_feeds () { #{{{
 	my $page=shift;
 
@@ -319,7 +410,7 @@ sub remove_feeds () { #{{{
 sub pagefile ($) { #{{{
 	my $page=shift;
 
-	return "$IkiWiki::config{srcdir}/$page.html";
+	return "$config{srcdir}/".htmlpage($page);
 } #}}}
 
 1